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Related Concept Videos

Auditory Perception01:17

Auditory Perception

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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The Auditory Ossicles01:11

The Auditory Ossicles

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The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
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Auditory Pathway01:15

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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Subliminal Perception01:15

Subliminal Perception

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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Understanding the Self01:28

Understanding the Self

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The self is a central aspect of human identity, encompassing an individual’s beliefs, emotions, perceptions, and experiences. It is a cognitive and psychological construct that enables individuals to interpret their traits and behaviors, influencing how they perceive themselves and interact with the world. While personality consists of stable and enduring characteristics, the self is shaped by self-perception and social experiences. This distinction highlights the dynamic nature of the...
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Related Experiment Video

Updated: Jan 27, 2026

Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain
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Understanding rostral-caudal auditory cortex contributions to auditory perception.

Kyle Jasmin1,2, César F Lima3,4, Sophie K Scott5

  • 1Institute of Cognitive Neuroscience, University College London, London, UK. kyle.jasmin.11@ucl.ac.uk.

Nature Reviews. Neuroscience
|March 29, 2019
PubMed
Summary

Neural systems for sound recognition and sound production/spatial processing are distinct. Differences in neural response times in primate auditory cortex regions may explain these functional variations.

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Area of Science:

  • Neuroscience
  • Auditory Processing
  • Primate Brain

Background:

  • Functional and anatomical distinctions exist between neural systems for environmental sound recognition and those for sensorimotor guidance of sound production and spatial processing.
  • Evidence for this separation comes from speech, music, and sound perception/production research.

Purpose of the Study:

  • To investigate computational distinctions in the primate auditory cortex.
  • To explore how these distinctions relate to functional differences in auditory processing.

Main Methods:

  • Analysis of disparate literatures on auditory perception and production.
  • Examination of computational differences between rostral and caudal primate auditory cortex.

Main Results:

  • Identified computational distinctions between rostral and caudal primate auditory cortex.
  • Linked these distinctions to functional differences in auditory processing.

Conclusions:

  • Functional differences in auditory processing may stem from variations in neuronal response times and temporal profiles in rostral and caudal auditory cortex.
  • Computational models of primate auditory pathways should consider these temporal response differences.